CVE-2026-22858
freerdp3-proxy: FreeRDP is a free implementation of the Remote Desktop Protocol
CVE-2026-22858 is fixed in 27 products on 1 platform, first by freerdp3-proxy 3.20.2+dfsg-1, released January 14, 2026. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
9.1
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0070
53rd percentile
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, global-buffer-overflow was observed in FreeRDP's Base64 decoding path. The root cause appears to be implementation-defined char signedness: on Arm/AArch64 builds, plain char is treated as unsigned, so the guard c <= 0 can be optimized into a simple c != 0 check. As a result, non-ASCII bytes (e.g., 0x80-0xFF) may bypass the intended range restriction and be used as an index into a global lookup table, causing out-of-bounds access. This vulnerability is fixed in 3.20.1.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| freerdp · RHEL 10 | 3.10.3-3.el10_0.2 | RHSA-2026:4121 | Feb 9, 2026 |
| freerdp · RHEL 8 | 2:2.11.7-3.el8_10 | RHSA-2026:3334 | Mar 12, 2026 |
| freerdp · RHEL 9 | 2:2.11.7-1.el9_7.2 | RHSA-2026:3067 | Mar 12, 2026 |
| freerdp · almalinux 10 | 2:3.10.3-5.el10_1.2 | ALSA-2026:3068 | Feb 23, 2026 |
| freerdp · almalinux 8 | 2:2.11.7-3.el8_10 | ALSA-2026:3334 | Feb 25, 2026 |
| freerdp · almalinux 9 | 2:2.11.7-1.el9_7.2 | ALSA-2026:3067 | Feb 23, 2026 |
| freerdp · amzn 2023 | 2:3.6.3-1.amzn2023.0.3 | ALAS2023-2026-1433 | Feb 16, 2026 |
| freerdp · ol 10 | 2:3.10.3-5.el10_1.2 | ELSA-2026-3068 | Feb 23, 2026 |
| freerdp · ol 8 | 2:2.11.7-3.el8_10 | ELSA-2026-3334 | Feb 25, 2026 |
| freerdp · ol 9 | 2:2.11.7-1.el9_7.2 | ELSA-2026-3067 | Feb 23, 2026 |
| freerdp · opensuse-leap 16.0 | 3.22.0-160000.1.1 | OPENSUSE-SU-2026:20339-1 | Mar 10, 2026 |
| freerdp · rocky 10 | 2:3.10.3-5.el10_1.2 | RLSA-2026:3068 | Feb 24, 2026 |
| freerdp · rocky 8 | 2:2.11.7-3.el8_10 | RLSA-2026:3334 | Feb 26, 2026 |
| freerdp · rocky 9 | 2:2.11.7-1.el9_7.2 | RLSA-2026:3067 | Feb 24, 2026 |
| freerdp · sles 15.7 | 3.10.3-150700.3.3.1 | SUSE-SU-2026:0345-1 | Jan 30, 2026 |
| freerdp-debuginfo · amzn 2023 | 2:3.6.3-1.amzn2023.0.3 | ALAS2023-2026-1433 | Feb 16, 2026 |
| freerdp-debugsource · amzn 2023 | 2:3.6.3-1.amzn2023.0.3 | ALAS2023-2026-1433 | Feb 16, 2026 |
| freerdp-devel · RHEL 8 | 2:2.11.7-3.el8_10 | RHSA-2026:3334 | Mar 12, 2026 |
| freerdp-devel · RHEL 9 | 2:2.11.7-1.el9_7.2 | RHSA-2026:3067 | Mar 12, 2026 |
| freerdp-devel · almalinux 10 | 2:3.10.3-5.el10_1.2 | ALSA-2026:3068 | Feb 23, 2026 |
| freerdp-devel · almalinux 8 | 2:2.11.7-3.el8_10 | ALSA-2026:3334 | Feb 25, 2026 |
| freerdp-devel · almalinux 9 | 2:2.11.7-1.el9_7.2 | ALSA-2026:3067 | Feb 23, 2026 |
| freerdp-devel · amzn 2023 | 2:3.6.3-1.amzn2023.0.3 | ALAS2023-2026-1433 | Feb 16, 2026 |
| freerdp-devel · ol 10 | 2:3.10.3-5.el10_1.2 | ELSA-2026-3068 | Feb 23, 2026 |
| freerdp-devel · ol 8 | 2:2.11.7-3.el8_10 | ELSA-2026-3334 | Feb 25, 2026 |
| freerdp-devel · ol 9 | 2:2.11.7-1.el9_7.2 | ELSA-2026-3067 | Feb 23, 2026 |
| freerdp-libs · RHEL 8 | 2:2.11.7-3.el8_10 | RHSA-2026:3334 | Mar 12, 2026 |
| freerdp-libs · RHEL 9 | 2:2.11.7-1.el9_7.2 | RHSA-2026:3067 | Mar 12, 2026 |
| freerdp-libs · almalinux 10 | 2:3.10.3-5.el10_1.2 | ALSA-2026:3068 | Feb 23, 2026 |
| freerdp-libs · almalinux 8 | 2:2.11.7-3.el8_10 | ALSA-2026:3334 | Feb 25, 2026 |
| freerdp-libs · almalinux 9 | 2:2.11.7-1.el9_7.2 | ALSA-2026:3067 | Feb 23, 2026 |
| freerdp-libs · amzn 2023 | 2:3.6.3-1.amzn2023.0.3 | ALAS2023-2026-1433 | Feb 16, 2026 |
| freerdp-libs · ol 10 | 2:3.10.3-5.el10_1.2 | ELSA-2026-3068 | Feb 23, 2026 |
| freerdp-libs · ol 8 | 2:2.11.7-3.el8_10 | ELSA-2026-3334 | Feb 25, 2026 |
| freerdp-libs · ol 9 | 2:2.11.7-1.el9_7.2 | ELSA-2026-3067 | Feb 23, 2026 |
| freerdp-libs-debuginfo · amzn 2023 | 2:3.6.3-1.amzn2023.0.3 | ALAS2023-2026-1433 | Feb 16, 2026 |
| freerdp-server · almalinux 10 | 2:3.10.3-5.el10_1.2 | ALSA-2026:3068 | Feb 23, 2026 |
| freerdp-server · amzn 2023 | 2:3.6.3-1.amzn2023.0.3 | ALAS2023-2026-1433 | Feb 16, 2026 |
| freerdp-server · ol 10 | 2:3.10.3-5.el10_1.2 | ELSA-2026-3068 | Feb 23, 2026 |
| freerdp-server-debuginfo · amzn 2023 | 2:3.6.3-1.amzn2023.0.3 | ALAS2023-2026-1433 | Feb 16, 2026 |
| freerdp3 · Debian 13.5 (trixie) | 3.15.0+dfsg-2.1+deb13u1 | DEBIAN-CVE-2026-22858 | Jan 14, 2026 |
| freerdp3 · Debian 14 | 3.20.2+dfsg-1 | DEBIAN-CVE-2026-22858 | Jan 14, 2026 |
| freerdp3-proxy · Ubuntu 25.10 (questing) | 3.16.0+dfsg-2ubuntu0.3 | freerdp3-proxy 3.16.0+dfsg-2ubuntu0.3 | Feb 25, 2026 |
| freerdp3-proxy · Ubuntu 26.04.1 LTS (resolute) | 3.20.2+dfsg-1 | freerdp3-proxy 3.20.2+dfsg-1 | Jan 14, 2026 |
| freerdp3-proxy-modules · Ubuntu 25.10 (questing) | 3.16.0+dfsg-2ubuntu0.3 | freerdp3-proxy-modules 3.16.0+dfsg-2ubuntu0.3 | Feb 25, 2026 |
| freerdp3-proxy-modules · Ubuntu 26.04.1 LTS (resolute) | 3.20.2+dfsg-1 | freerdp3-proxy-modules 3.20.2+dfsg-1 | Jan 14, 2026 |
| freerdp3-sdl · Ubuntu 25.10 (questing) | 3.16.0+dfsg-2ubuntu0.3 | freerdp3-sdl 3.16.0+dfsg-2ubuntu0.3 | Feb 25, 2026 |
| freerdp3-sdl · Ubuntu 26.04.1 LTS (resolute) | 3.20.2+dfsg-1 | freerdp3-sdl 3.20.2+dfsg-1 | Jan 14, 2026 |
| freerdp3-shadow-x11 · Ubuntu 24.04.5 LTS (noble) | 3.5.1+dfsg1-0ubuntu1.4 | freerdp3-shadow-x11 3.5.1+dfsg1-0ubuntu1.4 | Feb 25, 2026 |
| freerdp3-shadow-x11 · Ubuntu 25.10 (questing) | 3.16.0+dfsg-2ubuntu0.3 | freerdp3-shadow-x11 3.16.0+dfsg-2ubuntu0.3 | Feb 25, 2026 |
| freerdp3-shadow-x11 · Ubuntu 26.04.1 LTS (resolute) | 3.20.2+dfsg-1 | freerdp3-shadow-x11 3.20.2+dfsg-1 | Jan 14, 2026 |
| freerdp3-wayland · Ubuntu 24.04.5 LTS (noble) | 3.5.1+dfsg1-0ubuntu1.4 | freerdp3-wayland 3.5.1+dfsg1-0ubuntu1.4 | Feb 25, 2026 |
| freerdp3-wayland · Ubuntu 25.10 (questing) | 3.16.0+dfsg-2ubuntu0.3 | freerdp3-wayland 3.16.0+dfsg-2ubuntu0.3 | Feb 25, 2026 |
| freerdp3-wayland · Ubuntu 26.04.1 LTS (resolute) | 3.20.2+dfsg-1 | freerdp3-wayland 3.20.2+dfsg-1 | Jan 14, 2026 |
| freerdp3-x11 · Ubuntu 24.04.5 LTS (noble) | 3.5.1+dfsg1-0ubuntu1.4 | freerdp3-x11 3.5.1+dfsg1-0ubuntu1.4 | Feb 25, 2026 |
| freerdp3-x11 · Ubuntu 25.10 (questing) | 3.16.0+dfsg-2ubuntu0.3 | freerdp3-x11 3.16.0+dfsg-2ubuntu0.3 | Feb 25, 2026 |
| freerdp3-x11 · Ubuntu 26.04.1 LTS (resolute) | 3.20.2+dfsg-1 | freerdp3-x11 3.20.2+dfsg-1 | Jan 14, 2026 |
| libfreerdp-client3-3 · Ubuntu 24.04.5 LTS (noble) | 3.5.1+dfsg1-0ubuntu1.4 | libfreerdp-client3-3 3.5.1+dfsg1-0ubuntu1.4 | Feb 25, 2026 |
| libfreerdp-client3-3 · Ubuntu 25.10 (questing) | 3.16.0+dfsg-2ubuntu0.3 | libfreerdp-client3-3 3.16.0+dfsg-2ubuntu0.3 | Feb 25, 2026 |
| libfreerdp-client3-3 · Ubuntu 26.04.1 LTS (resolute) | 3.20.2+dfsg-1 | libfreerdp-client3-3 3.20.2+dfsg-1 | Jan 14, 2026 |
| libfreerdp-server-proxy3-3 · Ubuntu 25.10 (questing) | 3.16.0+dfsg-2ubuntu0.3 | libfreerdp-server-proxy3-3 3.16.0+dfsg-2ubuntu0.3 | Feb 25, 2026 |
| libfreerdp-server-proxy3-3 · Ubuntu 26.04.1 LTS (resolute) | 3.20.2+dfsg-1 | libfreerdp-server-proxy3-3 3.20.2+dfsg-1 | Jan 14, 2026 |
| libfreerdp-server3-3 · Ubuntu 24.04.5 LTS (noble) | 3.5.1+dfsg1-0ubuntu1.4 | libfreerdp-server3-3 3.5.1+dfsg1-0ubuntu1.4 | Feb 25, 2026 |
| libfreerdp-server3-3 · Ubuntu 25.10 (questing) | 3.16.0+dfsg-2ubuntu0.3 | libfreerdp-server3-3 3.16.0+dfsg-2ubuntu0.3 | Feb 25, 2026 |
| libfreerdp-server3-3 · Ubuntu 26.04.1 LTS (resolute) | 3.20.2+dfsg-1 | libfreerdp-server3-3 3.20.2+dfsg-1 | Jan 14, 2026 |
| libfreerdp-shadow-subsystem3-3 · Ubuntu 24.04.5 LTS (noble) | 3.5.1+dfsg1-0ubuntu1.4 | libfreerdp-shadow-subsystem3-3 3.5.1+dfsg1-0ubuntu1.4 | Feb 25, 2026 |
| libfreerdp-shadow-subsystem3-3 · Ubuntu 25.10 (questing) | 3.16.0+dfsg-2ubuntu0.3 | libfreerdp-shadow-subsystem3-3 3.16.0+dfsg-2ubuntu0.3 | Feb 25, 2026 |
| libfreerdp-shadow-subsystem3-3 · Ubuntu 26.04.1 LTS (resolute) | 3.20.2+dfsg-1 | libfreerdp-shadow-subsystem3-3 3.20.2+dfsg-1 | Jan 14, 2026 |
| libfreerdp-shadow3-3 · Ubuntu 24.04.5 LTS (noble) | 3.5.1+dfsg1-0ubuntu1.4 | libfreerdp-shadow3-3 3.5.1+dfsg1-0ubuntu1.4 | Feb 25, 2026 |
| libfreerdp-shadow3-3 · Ubuntu 25.10 (questing) | 3.16.0+dfsg-2ubuntu0.3 | libfreerdp-shadow3-3 3.16.0+dfsg-2ubuntu0.3 | Feb 25, 2026 |
| libfreerdp-shadow3-3 · Ubuntu 26.04.1 LTS (resolute) | 3.20.2+dfsg-1 | libfreerdp-shadow3-3 3.20.2+dfsg-1 | Jan 14, 2026 |
| libfreerdp3-3 · Ubuntu 24.04.5 LTS (noble) | 3.5.1+dfsg1-0ubuntu1.4 | libfreerdp3-3 3.5.1+dfsg1-0ubuntu1.4 | Feb 25, 2026 |
| libfreerdp3-3 · Ubuntu 25.10 (questing) | 3.16.0+dfsg-2ubuntu0.3 | libfreerdp3-3 3.16.0+dfsg-2ubuntu0.3 | Feb 25, 2026 |
| libfreerdp3-3 · Ubuntu 26.04.1 LTS (resolute) | 3.20.2+dfsg-1 | libfreerdp3-3 3.20.2+dfsg-1 | Jan 14, 2026 |
| libwinpr · RHEL 8 | 2:2.11.7-3.el8_10 | RHSA-2026:3334 | Mar 12, 2026 |
| libwinpr · RHEL 9 | 2:2.11.7-1.el9_7.2 | RHSA-2026:3067 | Mar 12, 2026 |
| libwinpr · almalinux 10 | 2:3.10.3-5.el10_1.2 | ALSA-2026:3068 | Feb 23, 2026 |
| libwinpr · almalinux 8 | 2:2.11.7-3.el8_10 | ALSA-2026:3334 | Feb 25, 2026 |
| libwinpr · almalinux 9 | 2:2.11.7-1.el9_7.2 | ALSA-2026:3067 | Feb 23, 2026 |
| libwinpr · amzn 2023 | 2:3.6.3-1.amzn2023.0.3 | ALAS2023-2026-1433 | Feb 16, 2026 |
| libwinpr · ol 10 | 2:3.10.3-5.el10_1.2 | ELSA-2026-3068 | Feb 23, 2026 |
| libwinpr · ol 8 | 2:2.11.7-3.el8_10 | ELSA-2026-3334 | Feb 25, 2026 |
| libwinpr · ol 9 | 2:2.11.7-1.el9_7.2 | ELSA-2026-3067 | Feb 23, 2026 |
| libwinpr-debuginfo · amzn 2023 | 2:3.6.3-1.amzn2023.0.3 | ALAS2023-2026-1433 | Feb 16, 2026 |
| libwinpr-devel · RHEL 8 | 2:2.11.7-3.el8_10 | RHSA-2026:3334 | Mar 12, 2026 |
| libwinpr-devel · RHEL 9 | 2:2.11.7-1.el9_7.2 | RHSA-2026:3067 | Mar 12, 2026 |
| libwinpr-devel · almalinux 10 | 2:3.10.3-5.el10_1.2 | ALSA-2026:3068 | Feb 23, 2026 |
| libwinpr-devel · almalinux 8 | 2:2.11.7-3.el8_10 | ALSA-2026:3334 | Feb 25, 2026 |
| libwinpr-devel · almalinux 9 | 2:2.11.7-1.el9_7.2 | ALSA-2026:3067 | Feb 23, 2026 |
| libwinpr-devel · amzn 2023 | 2:3.6.3-1.amzn2023.0.3 | ALAS2023-2026-1433 | Feb 16, 2026 |
| libwinpr-devel · ol 10 | 2:3.10.3-5.el10_1.2 | ELSA-2026-3068 | Feb 23, 2026 |
| libwinpr-devel · ol 8 | 2:2.11.7-3.el8_10 | ELSA-2026-3334 | Feb 25, 2026 |
| libwinpr-devel · ol 9 | 2:2.11.7-1.el9_7.2 | ELSA-2026-3067 | Feb 23, 2026 |
| libwinpr-tools3-3 · Ubuntu 24.04.5 LTS (noble) | 3.5.1+dfsg1-0ubuntu1.4 | libwinpr-tools3-3 3.5.1+dfsg1-0ubuntu1.4 | Feb 25, 2026 |
| libwinpr-tools3-3 · Ubuntu 25.10 (questing) | 3.16.0+dfsg-2ubuntu0.3 | libwinpr-tools3-3 3.16.0+dfsg-2ubuntu0.3 | Feb 25, 2026 |
| libwinpr-tools3-3 · Ubuntu 26.04.1 LTS (resolute) | 3.20.2+dfsg-1 | libwinpr-tools3-3 3.20.2+dfsg-1 | Jan 14, 2026 |
| libwinpr3-3 · Ubuntu 24.04.5 LTS (noble) | 3.5.1+dfsg1-0ubuntu1.4 | libwinpr3-3 3.5.1+dfsg1-0ubuntu1.4 | Feb 25, 2026 |
| libwinpr3-3 · Ubuntu 25.10 (questing) | 3.16.0+dfsg-2ubuntu0.3 | libwinpr3-3 3.16.0+dfsg-2ubuntu0.3 | Feb 25, 2026 |
| libwinpr3-3 · Ubuntu 26.04.1 LTS (resolute) | 3.20.2+dfsg-1 | libwinpr3-3 3.20.2+dfsg-1 | Jan 14, 2026 |
| winpr3-utils · Ubuntu 24.04.5 LTS (noble) | 3.5.1+dfsg1-0ubuntu1.4 | winpr3-utils 3.5.1+dfsg1-0ubuntu1.4 | Feb 25, 2026 |
| winpr3-utils · Ubuntu 25.10 (questing) | 3.16.0+dfsg-2ubuntu0.3 | winpr3-utils 3.16.0+dfsg-2ubuntu0.3 | Feb 25, 2026 |
| winpr3-utils · Ubuntu 26.04.1 LTS (resolute) | 3.20.2+dfsg-1 | winpr3-utils 3.20.2+dfsg-1 | Jan 14, 2026 |
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